Multiple-drill press



2 Shams-Sheet 1 Hr 702mm COPY AWE??? L. W. MOULTON IUL'I'IPLE DRILLPRESS Filed Dec. 11, 1920 Feb. 1 7. 1925.

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s'raras LLOYD W. MOULTON, OF SYRACUSE, NEW YORK MULTIPLE-DRILL PRESS.

Application filed December 11, 1920. Serial No. 29,873.

To all whom it may concern:

Be it known that I, LLOYD W. MOULTON, of Syracuse, in the count ofOnondaga, in the State of New York, iave invented new and usefulImprovements in MultiplwDrill Presses, of which the following, taken inconnection with the accompanying drawings, is a full, clear, and exactdescription.

This invention relates to certain improvements in multiple drill pressesin which a plurality of drills are arranged to operate upon the work atdifferent angles, and involves the use of one or more jigs carried by asuitable support for directing the drills to the work.

One of the objects is to provide a means whereby the drills or othertools may be simultaneously moved to and from the work at diderentangles thereto.

Another object is to mount the jigs upon a rotatable support in suchmanner that they may be successively brought into registration with thetools for operation upon the work.

Another object is to provide means for rotating the jigs relatively toand during the rotation of the support, as they are successively broughtinto registration with the tools.

Other objects and uses relating to specific parts of the device will bebrought out in in the following description.

In the drawings:-

' Figure 1 is a side elevation, partly in section, of a multiple drillpress embodying the various features of my. invention.

Figure 2 is an enlarged, longitudinal, sectional view of the support forthe horizontally reciprocating drill spindles and supporting guidestherefor.

Figure -3 is a sectional view taken on 'line 33, Figure 2, in which thetrain of gears for transmitting motion from the motor shaft to the drillspindles is shown by dotted lines.

Figure l is a top plan of the mechanism shown in Figure 1 omitting thecarrier for the vertically movable drill spindles and motor.

Figure -5 is an enlarged. horizontal sectional view of a. portion of therotary support for the j igs, showing more particularly the cams andangular disks for turning the and holding them in fixed relation totheir support as they are succes sively brought into position to beoperated upon by the drills or other tools.

Figure 6 is an end View, partly in section, of two of the cams and theirholding disks together with the stationary stud an rests for turning thejigs and holding them at in their adjusted positions while the work isbeing operated upon by the drills, the parts being shown in a flat,vertical plane or development of the circle in which they are normallyarranged.

In order that my invention may be l understood, 1 have shown a bedmounted upon any suitable suppo for receiving and supporting an el tor3, a tool carrier a drill spindles 5 and a rotary sup turret -6 carryinga series of, in this stance five, Work holding jigs -7- over which ismounted a vertically movable tool carrier 8 for a series of drillSJlI'lCllQS 7&1 -5. The motor 3- is secured )y any suitable fasteningmeans to the bed plate 1 and is provided with a horizontally extendingsectional shaft -10-, which, as shown more clearly in Figure 2-, isjournaled in a horizontally reciprocating sleeve 11 and has its sectionssplined one upon the other telescopically for relative axial movement.

This sleeve with one of the motor shaft 35 sections therein is slidableendwise in a suitable bearin 12 on. the bed plate -1- and is heldagainst turning by an offset guide pin 13 which is secured to the outerend of the sleeve by means of a clamp on -14: and is movable endwise ina guide opening 15- in the bearing l2.

The carrier -4 for the drill spindles 5 is secured coaxially of and uponthe inner end of the sleeve 11and is pro vided with an inner chamber 1t3for receiving a train of gears -17 by which rotary motion is transmittedfrom the motor shaft 10 to the drill spindles -51. the inner end head orgear case of the carrier oo -4 being provided with a removable plate 18to permit access to the gears l7. when desired, and also forms a bearingfor the adjacent ends of said spindles and coopcrates with the oppositeend walls of the gear case to hold the gears against endwisc movement.

The spindles -5- extend some distance beyond the inner face or" thecarrier land are provided with means for receiving and supporting acorrespondin number of drills or other tools w, which together.

with the spindles -5 and carrier 4-- are movable axially or horizontallyto and from the work in the jigs --7- presently de xribed.

The jig supporting turret 6-- is rotatably mounted upon a vertical shaftor stud -l9 on the bed plate -1 to rotate about a vertical axis, and isprovided with a concentric annular flange movable around and upon anannular seat 21- on said bed plate some distance from the axis of theshaft or stud 19, to steady the turret 6- a ainst vibratory movementduring its rotation and also serving to resist the strains incidental tothe operation of the drill spindles -5 and -5' upon the work in the jigs7. The central'por- I tion or hub 22- of the turret 6- is depressed somedistance below the upper face thereof and is engaged by a washer 23-which is held in place by a nut 24 engaging the reduced, threaded, upperend of the stud -19- for holding the turret 6 against upwarddisplacement, the lower end of said stud being provided with an annularshoulder -25- for engaging the under side of the bed plate 1 to hold thestud against upward displacement.

The jigs 7-- are substantially identical in form and are adapted toreceive difierent pieces of similar work, each of which is to beoperated upon or drilled in live sides thereof, four of which aredisposed about the axis of rotation of the to be operated uponsequentially by the drills 5-, while the other side faces in thedirection of extension of said axis adjacent the drills -5, to beoperated upon by the last named drills.

These jigs 7 are arranged circumferentially around the axis of therotary turret -6 in uniformly spaced relation and are rovided withhorizontally extending spinles 26- extending radially through suitablebearings -27 in the turret 6, to permit the to be rotated relatively tothe turret, the main bodies of the jigs being enlarged and engaged withthe outer end faces of the bearings 27-, to hold them against axialmovement, while the inner ends of the spindles 2(iare provided with nuts28 screwed thereon for engaging the inner ends of the bearings -27-, tohold the jigs against axial movement in the o posits direction.

Each jig dapted to receive and support a similar piece of work whichheld therein by means of a cl clamping screws -3\J--- outer end of theto The door sides and 011122; are provided with suitable teasers -31corresponding in number to the num ber of drill spindles 5 and 5 whichare alined with said openings as the turret -6 is adjusted rotarily todifferent positions.

Suitable means is provided for automatically rotating each jig, in thisinstance onequarter turn about its axis during each rotary adjustment ofthe turret --6, said means consisting of a cam disk --32- which is keyedto its jig spindle 26 and is rovided with a series of, in this instanceiour, cam faces or projections '33 at the four corners thereof, and inequally spaced relation circumferentially about the axis of said spindlefor successively engaging a stationary stud or pin -34 on the bed plate1 as the jigs with the work therein are successively brought intoposition for receiving the drills a of both of the reciprocatingcarriers 4- and 8 at which time each disk is held against turningmovement by a substantially rectangular detent disk -35, which is alsokeyed t0 the shaft or spindle 26 adjacent the disk 32, so that its foursides may successively ride upon stationary, fla't seats or rests 36 onthe bed plate 1, following each successive movement of the turret 6- androtary adjustment of the jigs.

For example, in Figure -6- l have shown two of the jig spindles 26- anddisks 32- and 35 mounted thereon in their normal positions of rest, inwhich one of the flat sides of each of the disks 35 is engaged with oneof the underlying rests or seats 36 to hold the jigs against turningduring the drilling operations.

As soon as the drills aare withdrawn from the work, the turret 6 rotatedby hand or otherwise to cause the jigs to move in the directionindicated by the arrow x-, Figure 6-, during which movement the cams 38nearest the pins or studs 3-.l will be brou ht into enqa 'cb L, b

ment with said studs and thereby cause the rotation of the jigsone-quarter turn and at the same time bringing the next succeeding, flatface of the disks 35 into engage ment with the next succeeding rests -3ito present the next succeeding faces of the jigs to the drills and tohold said jigs against turning movement during the next succeedingdrilling operation, these operations being repeated at each rotaryadjustment of the turret -6, in this instance one-fifth of a turn, itbeing understood that the degree of rotary adjustment of the turret ,6depends upon the number of the jigs mounted thereon, which number may bevaried at will according to the work to be performed. 7'

Suitable provided for loclri rotary turret 45- in and 37 movable in aguide opening 38- into and out of sockets -39- in the lower edge of theannular flange --20, said looking bolt being pivotally connected to anoperating lever -l0 which is fulcrumed at 41 u on the bed plate 1 andmay be connected by a link -42- to a pedal or any other suitableactuating member, not necessary to herein illustrate or describe, thelever -l0 being retracted by a spring 43 to yieldingly hold the bolt37-- in its locking position.

The sockets 9- correspond in number to the number of jigs -7 on therotary turret 6; and are separated uniform distances apartcireumferentially around the axis of said turret to successivelyregister with the locking bolt 37 as the jigs with the work therein aresuccessively brought into position to be operated upon by the drills .a.

As previousl intimated, the carrier 8- carrying the rill spindles 5- maybe reciprocated vertically by any suitable mechanism, not necessary toherein illustrate or describe, while the drill spindles 5- may berotated b any of the well known forms of driving mechanisms commonlyused for driving spindles on a vertically, reciprocating head.

It is desirable to provide means for reciprocating the carrier e1-simultaneously with that of the carrier --8 so that the drills of bothheads or supports may enter the work at the same time and, for thispurpose, the carrier 8 is connected by a link -l tto one arm of, a bellcrank lever 45 which in turn is tulcrumed at 46 upon the'bed plate -1-and has its other arm or arms pivotally connected to the carrier 4-,whereby, as tile carrier 8 is depressed to bring the vertical spindlesinto engagement with the work, the carrier -l will be moved inwardly tobring its spindles into engagement the work at right angles to that ofthe vertical spindles a, the reverse or upward movement of the carrier8- serving to return the carrier 4:.

The link is provided with a turn buckle l7 by which the movement of thecarrier may be adjusted to regulate the degree of axial movement of thecorresionding drills a relatively to that of t e drills of the carrier 8As shown more clearly in Figure i, the jigs -7 on the turret 6- arearranged in live diilerent positions which also represent the normalpositions of rest, while the work therein is being drilled. thesepositions being designated by the reference loters c-, -al-, e. -f andthe turret being rotated in the direction indicated by the arrow y/,while the direction of rotation of the jigs about their respective axesis indicated by the arrow 2-, as the turret 6- is rotated.

The turret -6- is preferably rotated by hand to successively registerthe jigs -7- with the horizontally movable spindles 5 carried by thecarrier -4-, at which time the jigs are all held against rotary movementabout their respective axes by the engagement of the fiat sides of thecorresponding disks .-35-- with the rests 3(i--, while the locking bolt-3T serves to hold the turret in its dilierent positions of rest.

The pieces of work to be operated upon are placed in the jigs atposition e in a certain definite position with relation thereto,whereupon the locking bolt -3T- is withdrawn to release the turret i-,which is then turned one-fifth of a turn to move the jig with the worktherein from the position c to the position in registration with thedrill spindles 5- and also registering its single, vertical, guideopening 3lwith the corresponding, single drill cz, shown at the righthand of the carrier -8 Figure l in which figure four sets of drillspindles 5'- are shown, one at the right, two intermediate and anothergroup of three at the left. two of which constitute a third set and theother a fourth set, said drill spindles -5- being arrangedcircumferentially about the axes of the turret 6 corresponding to theguide openings -31- in the-jigs at the positions -cZ-, e, f and rhereafter termed the drilling or working positions.

After the drilling operation at position -cZ- is completed and anotherpiece of work is inserted in the next succeeding jig at position c-, thelocking bolt 37. is again released and the turret -6- turned anotherfifth turn and relocked by the bolt ")l"' Each ivith the work therein isheld against turning while being shifted from position cto position --f,while the jig at position -ol-- with the work therein previously drilledat the end and top will have been shifted from position -(Z to position-e--, at which time it will have been rotated one-quarter turn by theengagement of its cam disk -32 with the pin 34-, to present a dillerentside of the jig and work to the intermediate set ot vertical drills -5-,whereupon the curriers 8 and 4lare again operated to cause their drillsto enter the work in positions (Z--- and e-.

When this second drilling operation is completed and a third piece ofwork has been inserted in the jig at position --c-, the turret G isagain rotated a fifth turn with the result that the jig which waspreviously at position c will be brought to position a while those atpositions -d and e respectively will be brought to positions e and fwith the result that the jigs moved from the position (Z- to -c and frometo -f will each be turned a quarter turn, due to the engagement oftheir respective cam disks 32- with the pin 34, thus bringing the guideopenings -31-- of the jigs at positions d, e and f intoregistration withthe corresponding vertical, drill spindles -5, it being understood thatthere is, in this instance, one vertical drill spindle 5- for position-d, two for position e, one for position -f and two for position -g, allmounted upon the vertically, movable carrier 8-.

Again when the drilling operation is completed at positions -d-, -e and-f--, the turret 6 is again released by the unlocking of the bolt 37and, after another piece of work has been inserted in the jig atposition c, is again rotated another fifth turn to bring the jig withthe work therein from the position c to position d and simultaneouslyadvancing the remaining jigs to positions e-, f, -g and -c respectivelyand, at the same time, causing said remaining jigs to be turned aone-quarter revolution by the engagement of their respective cam disks32 with the pin .34, thus completing the cycle of operation andpermitting the finished work to be withdrawn at position g, in whichlatter position, the fourth or last side of the jig and work therein arepresented to the last remaining set of vertical spindles -5', it beingunderstood that there are no spindles registering with position -0 butonly with positions cZ-, e, fand -g and that the jigs are successivelyreturned to their starting positions in passing from position -g toposition --0, ready for repetition of the operations previouslydescribed.

It is also to be understood that the jig in passing from position -ctoposition (Z is held against turning by engagement of its disk --35 withits track 36, which is elongated through the corresponding arc and thatthe pin 34 is omitted in that arc, but are interposed between all of theother rests 36, as shown by dotted lines in Figure 4,, to cli ect theturning movement of the jig with the work therein, as they are shiftedfrom position (Z- to positions e-, f-, gand return to -0-.

By means of the construction and operation described, it is evident thatan operator standing in the same position may place the work to beoperated upon in the jigs as they are successively brought to position-c--, may remove the finished work tsaeme from the jigs as they aresuccessively brought to position g--, and that at each operation thework is drilled at one end and at four different sides, and that thework is completed, ready for removal, at the fourth shift or at positiong--, the ends of the work and facin sides thereof being successivelypresenter to their respective drills during each step by step movementof the turret 6.

What'l claim is:

1. In a multiple drill press, a set of rotary drill spindles arranged insequence in spaced relation, a movable step by step in one plane intoregistration with the several drill spindles and having an independentrotary movement in a different plane, a support for the jig, means forclamping the work to the jig and means for bringing the drills and iginto working relation.

2. In a multiple drill press, a set of retary drill spindles arranged insequence in spaced relation, a jig movable step by step intoregistration with the several drill spindles, a support for the jig andmeans for bringing the drills and work into working engagement, said jigbeing rotatable upon its support in another plane to present differentsides ofthe work to the drills.

3. In a multiple drill press, a set of retary drill spindles arranged insequence in spaced relation, a jig movable step by step in one planeinto registration with the several drill spindles, a support for thejig,

'means for clamping the work to the jig and means for bringing thedrills and jig into working relation, said jig being rotatable inanother plane upon its support to present different sides of the work tothe drills, and means for automatically rotating the jig about its axiswhile it is passing from one to another of the drills.

4. In a multiple drill press, a rotary jig support, said support and jigbeing rotatable in different planes, a jig rotatably mounted in thesupport, a carrier movable axially of and toward and from the support,rotary tool-spindles mounted on the carrier about the axis of saidsupport to register with the jigs as the support is rotated, and meansfor rotating the jigs upon the support as said support is movedrotarily.

In a multiple drill press, the combination of a reciprocating carrierhaving drillspindles thereon about a common axis, a rotary jig-supportcoaxial with said axis, a jig mounted on said support and movabletherewith into registration with the drills successively, said jig beingrotatable in different planes from that of the support to presentdifferent sides thereof to the drills and means on the for clamping thework thereto.

6. in a machine of thecharacter described, a jig support adjustablerotarily about an axis, a carrier movable axially of and to ward andfrom the jig support, a series of rotary tol-carrying spindles mountedon the carrier about said axis, and a jig journalecl on the support torotate about an axis at right angles to the first named axis andprovided with a plurality of drill guides in spaced relation about itsaxis.

rotary adjustment about a different axis at an angle to that of itssupport.

8. In a machine of the character described, a jig support adjustablerotarily about an axls, a carrier movable axially of and toward and fromthe jig support, a series of rotary tool-carrying spindles mounted onthe carrier about said axis, a jig mounted on the support and movableinto and out of registration with the drills as the support is rotated,a work-holder on said jig, and a second tool carrier movable toward andfrom the axis of the jig support.

9. In a machine of the character described,

a j g pport adjustable rotarily about an axis, a carrier movable axiallyof and toward and from the jlg sup ort, a series of rotary tool-carryingspind es mounted on mounted on the second named carrier for...

movement into and out of engagement with the work when registeredtherewith.

10. In a machine of the character described, a turret rotatable in oneplane, a work-holder rotatable on the turret in another plane parallelwith the axis of the turret, a tool-carrier movable axially of theturret, a separate tool-carrier movable axially of the work-holder, andmeans for transmitting motion from one carrier to the other.

11. In a machine of the character described, a turret rotatable in oneplane, a work-holder rotatable on the turret in another plane, atool-carrier movable axially of the turret, a separate tool-carriermovable axially of the work-holder, means for reciprocating one of thecarriers, and means for transmitting reciprocatory motion, from LLOYD W.MOULTON. Witnesses H. E. CHASE, M. L. QUINELL.

